Add missing transformation view message display

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

HISTORY.rst

@@ -5,6 +5,8 @@
 - Don't exit GitLab makefile target if the branch to delete doesn't exist.
 - Automatically create transformations from the selection form that
   doesn't have arguments.
+- Add missing message displays for transformation error creation and
+  not argument transformation creation.
 
 3.3.2 (2019-12-05)
 ==================

mayan/apps/converter/views.py

@@ -2,6 +2,7 @@ from __future__ import absolute_import, unicode_literals
 
 import logging
 
+from django.contrib import messages
 from django.http import HttpResponseRedirect
 from django.template import RequestContext
 from django.urls import reverse
@@ -57,6 +58,10 @@ class TransformationCreateView(
             instance.save()
         except Exception as exception:
             logger.debug('Invalid form, exception: %s', exception)
+            messages.error(
+                message=_('Error creating transforamtion: %s.') % exception,
+                request=self.request
+            )
             return super(TransformationCreateView, self).form_invalid(form)
         else:
             return super(TransformationCreateView, self).form_valid(form)
@@ -284,6 +289,11 @@ class TransformationSelectView(
                 name=form.cleaned_data['transformation']
             )
 
+            messages.success(
+                message=_('Transformation created successfully.'),
+                request=self.request
+            )
+
             return HttpResponseRedirect(
                 redirect_to=reverse(
                     viewname='converter:transformation_list', kwargs={